Outboard-bearing for boring-spindles.



. c; I. SHIRLEY. OUTBOARD BEARING FOR BORING SPINDLES.

2 SHEETS-SHEET 1.

APPLICATION FILED FEB. 10, 1908.

' Patented Oct. 12; 1909.

jay-z WNW MW 0 0. I. SHIRLEY} OUTBOARD BEARING FOR BORING SPINDLES.

.APPLIOATIOR FILED PEB.10, 190s.

' 936,576. I Patented 0011121909.

2 SHEETS-SHEET 2.

' described and represented in the following are x;

CEPHAS I. SHIRLEY, OF NEVIARK, NEW JERSEY, ASSIGNOE T0 HYATEROLLER BEAR-- 'ING COMPANY, OF HARRISCN, NEW JERSEY, A CGRPORATION OF NEW JERSEY.

OUTBOARD-BEARING FOR BORENGr-SPINIDLES.

senate.

Specification of Letters Patent.

Patented Get. 112, Titlli.

Application filed February 10, 1908. Serial No. 415,034.

bmrd-Bearings for Boring-Spindles, fully specification. and the accompanying drawings, forming a part of the same.

The presentinvention. relates to an outboard bearing for the spindles of drilling machines, for use in cases where the drillspindle is provided with boring-cutters intermediate to its free end and its main hearing and requires a support at its outer end during a boring operation.

The invention relates to that class of bearings which permit the spindle to move longitudinally wliile avoiding any rotary friction upon the spindle itself, and any consequent In such constructions the outboard bearing is provided with a bushing fitted to move longitudinally upon the point of the spindle so that the spindle can slide therein, such bushing having means to engage the spindle to rotate therewithin an outboard hearing.

The present construction is designed for the spindles of drilling machines engaged inboring operations, as the work-table in drilling machines is of stationary construction, and thus holds the object stationary which is to be bored, while the rotary spindle carrying the boring-cutters is fed longitudinally through the object. The point or free end of the spindle which projects from; itsmain bearing in such cases intersects the plane of the work-table so as to pass through a hole in the same, and thetable may thus be provided with an outboard bearing of the class described, by which the free end of the spindle. may be firmly supported. In the present inventionthe outboard bearing is made entirely detachable from the worktable so that its upward extension may-not interfere with placingwork upon the. table when notused for boring. To prevent, as far as possible, the accumulation of chips and dirt upon the top of the outboard hearing as they fall from the cutter, I project the bearing somewhat above the work-table and provide a flange rotated with the spindle to cover the top of the bearing and throw the chips therefrom. The flange projects over the side of the casing to guard. the bearing effectively from the chips. This application of the invention is shown in the annexed drawing, in which Figure 1 is a side elevation of the frame or column of a drill-press with the parts related to this improvement; Fig. '2 is a vertical section of the outboard-bearing; Fig.

'3 is a. plan of the projecting flange; Fig.

i is a cross section of the bearing just below the cap F ig. 5 is a side view of the bushing and spindle where engaged with the bushing; .Fig. 6 is a. plan, and Fig. 7 an edge view of the cap for the bearing; Fig. 8 is a plan, and Fig. 9 a side view of the bushing; Fig. 10 is an edge view, and Fig. 11 a side view of the feather, upon a larger'sale than the other figures.

(tdesignates the column of the drill-press, 7) the vertical spindle, c the sleeve for feeding the same in the usual manner, and 0 the main bearing of the spindle.

The feeding mechanism and the connections for rotating the spindle are not shown, as they are well known and form no part of the present invention.

A boring-bar b is shown projected from the lower end of the spindle into an outboard bearing upon the work-table; but for convenience this boring-bar will be referred to herein as the spindle, as it participates in the rota yand longitudinal movements of the same.

(Z is the work-table, which in practiceis adjustable upon ways 6 upon the tront'of the column, and secured thereon when adjusted.

For the purposes of this invention, the table is provided with an aperture in which the lower part of the outboard Behring is shown inserted, the body 1 of the ca ing having a flange I! to restupon the table, and secured thereon by bolts i, as shown in Fig. 2. The body g isprojected above the table so that the work-chips may fall oil from its upper end, which is protected by a rotating flange larger than the body.

Thespindle is shown in Fig. 1 provided with cutters j adapted to bore the interior of a hanger-box 7c, and the box is shown carried by a. work-support Z held upon the table above the outboard hearing bv feet in, and

having posts '12, at thesido of the spindle.

supporting a clamp-plate 0 at the top which holds the work-piece or hanger-box la firmly upon the support L The feet hold the support Z above the top of the body 9. In the outboard bearing, this body 9 is provided with a bottom head p in which a thrust-collar is supported detachably and formed of the rings 9 and balls 1". The bushing s rests upon the thrust-collar and is surrounded by anti-friction rolls t, and is provided with a keyway u in which a feather v is fitted and secured by screws or rivets Q0. A cap a: is mounted on the casing and formed w1th an internal annular tongue a" and divided diametrically, as shown in Figs. 6 and 7, and secured upon the top of the body 9 by screws 3 The flange z is fitted directly to the spindle b and formed to slide thereon and notched at one side, as shown in Fig. 3, to receive the upper end of the feather 1., and has upon its uhder side a hub having a neck or groove to engage the annular tongue .r', which operates to hold it from displacement upon the top of the bearing. The cap is divided as shown in Fig. (5 so as to engage the tongue and groove. The hub rests upon the top of the bushing s, as shown in Fig. 2,

which supports it clear of the cap 03 so that it turns without any friction. The upper surface of the flange is projected downwardly toward its marg1n,'so that the chips may be thrown off of the same when they fall thereon,

and the edge of the 'flange projects beyond the body g, as shown in F ig: 2, so that the chips fall clear of the body. It is understood that the flange turns with the bushing and spindle. An aperture 1 is made through the fiangez for access to the screws 3/ in attaching the gap to the casing-body 9 after its halves are fitted to the neck of the flange, and.

- such aperture is closed by a movable plate 2 shown in Fig. 2, for the roll-guide 6, which is shown in Fig. 4 of the usual character in such l'icarings, to hold the rolls parallel within the casing.

it will be understood from the above de-' SCllPtlOIl'tllitl) I do not claim an outboard bearingbroadly, but the particular constructions claimed herein which adapt my'beari'ug for use with the tableof an upright drill. Having thus set forth the nature of the invention what is claimed herein is:

1. An outboard bearing for a splined drill-press spindle, comprising the casing g with the supporting-plate h projected from the casing below the top to rest u on the drill-press table, a bushing in the caring with feather to engage the splined spindle,

and the flange .2 fitted to the top of the'bearing and pro ecting over the side of the easing, with space between the under side of such flangeand the plate It for the accumulation of chips.

2. An outboard hearing for a splined drillpress spindle, comprising the casing g, a bushing in the bearin with feather to en gage the splined spindle, the cap w divided in halves and secured upon the top of the casing and having the internal annular tongue :12, and the -flange z necked to fit the annular tongue of the cap and engaged with the feather 11, whereby the flange protects theentire top of the bearing and is held from any vertical displacement;

3. In an outboard bearing for a drill-press having a splined vertical spindle, the s ecialconstruction for supporting the spin le in the bearing and also .rotatlng a guard-flange above the bearing, comprising the casing having a top thereon, a bushing s for the spindle rotatably mounted in the casing with afeather v fitted to the spindle and the bushing and extended abovev the top of the casing, and the guard-flange 2 fitted to the saindle above the top of the casing and engage with the feather and rotated thereby, substantially as shown and described.

4. An outboard bearing for a splined drillpress spindle, comprising the casing g with the supporting-plate h projected from the cats inf; below the top to rest upon the drill-press e.- a bushing within the bearing having feather fitted to the spline and projected above the topof the casing, the circular flange z fitted directly tothe spindle and fe-ather'above the top of. the casing, a collar with screws 3 to hold the flange 2 removably upon the top of the casing, and an aperture through the flange with movable cover 2 for access to the screws when required.

In testimony whereof I have hereunto so my hand in the'presence of two suliiscribiug witnesses.

. CEPHAS l/Slll'RlLl lY. Witnesses:

M. Ennnnu, J. 13mm.

Ill 

